SAN FRANCISCO, CA - FEBRUARY 05: A view of the logo during ESPN The Party on February 5, 2016 in San Francisco, California. (Photo by Mike Windle/Getty Images for ESPN)
The ESPN networks typically televise 10 national college football games per week across ESPN, ESPN2, ESPNU and ABC. Aside from the ten televised games, ESPN also broadcasts anywhere from 20-25 FBS games across conference networks and streaming services through ESPN+ and ESPN3.
In other words, ESPN has the rights to about 30-35 games per week and they choose which games to broadcast when and on which networks based off of potential ratings.